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« on: 2015-07-16 22:10:59 »
I have the impression that you do not understand these files correctly.
Actually, this solution is only for Jet Databases. They allow a maximum file size of 2GB. Therefore, the thumbnails are stored in separate files and not in the database. Now the file size of the database is reduced considerably.
The black boxes shows you that you delete a file, that is not orphaned. Only the thumbinformation is missing, the databaserecord with all other information (keyword ...) stil exist.
Processing the thumbfiles manually therefore is not meaningful.
Just treat your database as normal database and leave everything to TP
In case of solid black thumbs just make the thumbnail again.
If you want to remove the thumbnail use >shift-DEL<
If you want to delete tth image use >DEL<
Use Database>Advanced>Compact and repair regularly to clean up database and thumbfiles